How does Cache mode work on AD400 and AD300 locksets?

Resolution:

“Cache Mode” is an AD-Series feature which, accumulates and stores valid credentials that have recently been granted access by the Access Panel or head-in system. This recently granted access history is then used when communication with the Access Control Panel (ACP) is degraded and/or temporarily lost.  In “Cache Mode” the lock will grant access, based on previous access history saved when the lock and ACP were on-line and in normal communication

Entries are saved with a first in first out so only the newest access granted credentials are saved in the cache history.

The AD-Series ships from the factory with cache mode disabled. Factory Default reset disables cache mode.

To enable cache mode you must,

1) Select "Full Card Number" or "Facility Code" for the access acceptance criteria. "Full Card Number" is the most restrictive, and "Facility code" is the least restrictive. "Facility Code" cannot be used for mag cards or smart cards  they are not formatted with a facility code.

2) Set the "Card Bit Format" equal to or greater than the bits for the card format in use.

3) Decide if you want the cache list to purge after five days, which deletes individual cards from memory if not granted access in the past five days.

4) Set the "Max Entries Stored" which limits the maximum number of cards the cache mode will remember. A building lobby could be set to remember a large number of access granted cards; but an office could be limited to only the users, maintenance and security.

5) Also set the the "Re-latch" delay and trigger if desired. The ACP normally controls re-latch time but with no communication to the ACP and operation in cache mode, the SUS can set this re-latch delay in the AD-device.

 

The number of bits selected for "Card Bit Format" on an AD400 or AD300 must be equal too or larger than the bits on the cards in use. Setting this number correctly enables the cache mode collection of access granted cards. The number of bits selected has no affect on the maximum number of entries that can be saved in cache by the AD300 and AD400.

AD300 and AD400 locksets have a maximum of 1000 Cached entries that can be saved

WA-Series locksets do limit the number of Cached entries that could be saved in the lock based on the "Number of Bits" selected.

The AD300 and AD400 devices do not store audits during cache mode.  Audit "Date and Time" information and the saving of audit information is an Access Control Panel function, and during cache mode the ACP communication is lost so audits are not collected.


An AD400 granting credentials access in “cache mode” will blink the Schlage with the normal green LED, followed by a brief red Schlage LED flash, indicating no RF communication and access was granted via cache. There is a second normal long red blink with relock followed again by a short red flash when the AD400 re-locks in cache mode.

NOTE: When the PIM400-485 loses RS-485 communication with the ACP, the PIM400-485 stops RF communication to all its linked AD400s and Wireless devices. The RF communication is restored automatically when PIM400-485 RS-485 communication to the ACP is restored.